Thyristor starter for fluorescent tubes

The Type Y1112 fluoractorTM form Taxes instruments a specially designed thyristor for starting fluorescent tubes. Its main advantages over a standard thyristor are its much greater hold current. its ability to cope with rapidly rising anode-cathode voltages (high du/dt value), and its overvoltage protection. These properties make it very suitable to replace a traditional electro-mechanical[…]

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Fuse monitor

Fuse monitor

When an appliance ceases to —K operate, there may be various causes for this, one of which is the blowing of the mains fuse. The monitor proposed here contains an LED that lights when that is the case. It is suitable for use with fuses rated from milliamperes to amperes. As long as the fuse[…]

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Best-Electronics

Electronic Reversing Circuit for Model Rains

Many model train enthusiastic UV find the mechanical reversing system for trains in the HO series from Marklin and other manufacturers primitive and unreliable. The system is based on a.c. motors and a mechanical reversing assembly operated by a small electromagnet. The motor speed is determined by the track voltage, which can lie between 4[…]

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